Sigma
24-70mm f/2.8 EX DG Macro DF Pentax-k
 vs
Sigma
18-250mm f/3.5-6.3 DC OS HSM Pentax-k

vs

differences

Reasons to consider the Sigma 24-70mm f/2.8 EX DG Macro DF Pentax-k
Has a consant aperture Yes vs No
Help
 Constant aperture lenses offer the same aperture at all focal lengths
Significantly narrower aperture f/32 vs f/22
Help
 At its narrowest, the 24-70mm f/2.8 EX DG Macro DF Pentax-k goes 1.1 f-stops narrower
Wider aperture f/2.8 vs f/3.5
Help
 At its widest, the 24-70mm f/2.8 EX DG Macro DF Pentax-k captures slightly more light, 0.6 f-stops
Sigma 24-70mm f/2.8 EX DG Macro DF Pentax-k Learn more about
the Sigma 24-70mm f/2.8 EX DG Macro DF Pentax-k

Reasons to consider the Sigma 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Much more zoom 13.9x vs 2.9x
Help
 Around 5x more zoom, giving you more flexibility for photos
Has a silent focus motor Sigma HSM vs None
Help
 Focuses quickly and silently
Image stabilization Sigma OS vs None
Help
 Helps eliminate blur caused by small camera movements
Significantly better telephoto 250 mm vs 70 mm
Help
 More than 3.5x more reach, less perspective distortion
Slightly more magnification 1:3.4 (0.3x) vs 1:3.8 (0.3x)
Help
 Take macro shots with subjects more than 10% larger in your photo
Sigma 18-250mm f/3.5-6.3 DC OS HSM Pentax-k Learn more about
the Sigma 18-250mm f/3.5-6.3 DC OS HSM Pentax-k

similarities

Compared to lenses

Common Strengths Common Weaknesses

LensHero is not aware of any interesting strengths shared by these two products.
Prime lens Both are zoom lenses Help
Typically not as sharp as prime lenses

Compared to portrait lenses

Common Strengths Common Weaknesses

LensHero is not aware of any interesting strengths shared by these two products.

LensHero is not aware of any interesting weaknesses shared by these two products.

competitors

Shared Competitors

Advantages

Disadvantages
Pentax SMC DA 18-135mm f/3.5-5.6 ED AL DC WR

Pentax SMC DA 18-135mm f/3.5-5.6 ED AL DC WR

Travel lens

$497
Wide maximum Has a higher max f/stop
Aperture Has a narrower aperture
Compare the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR vs the 24-70mm f/2.8 EX DG Macro DF Pentax-k
Compare the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Tamron 28-75mm f/2.8 XR Di Pentax-k

Tamron 28-75mm f/2.8 XR Di Pentax-k

Portrait lens

$499
Compare the 28-75mm f/2.8 XR Di Pentax-k vs the 24-70mm f/2.8 EX DG Macro DF Pentax-k
Compare the 28-75mm f/2.8 XR Di Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Sigma 17-70mm f/2.8-4 DC Macro OS HSM Pentax-k

Sigma 17-70mm f/2.8-4 DC Macro OS HSM Pentax-k

Wide angle lens

$449
Compare the 17-70mm f/2.8-4 DC Macro OS HSM Pentax-k vs the 24-70mm f/2.8 EX DG Macro DF Pentax-k
Compare the 17-70mm f/2.8-4 DC Macro OS HSM Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k

Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k

Travel lens

$339
Aperture Has a narrower aperture
Wide maximum Has a lower max f/stop
Compare the 18-125mm f/3.8-5.6 DC OS HSM Pentax-k vs the 24-70mm f/2.8 EX DG Macro DF Pentax-k
Compare the 18-125mm f/3.8-5.6 DC OS HSM Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Lensbaby Composer Special Effects Fisheye Pentax-k

Lensbaby Composer Special Effects Fisheye Pentax-k

Fisheye lens

$179
Fisheye Is a fisheye lens
Length Is shorter
Compare the Composer Special Effects Fisheye Pentax-k vs the 24-70mm f/2.8 EX DG Macro DF Pentax-k
Compare the Composer Special Effects Fisheye Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k

Sigma 24-70mm f/2.8 EX DG Macro DF Pentax-k Competitors

Advantages

Disadvantages
Pentax SMC DA* 16-50mm f/2.8 ED SDM

Pentax SMC DA* 16-50mm f/2.8 ED SDM

Wide angle lens

$1,297
Focus motor Has a silent focus motor
Length Slightly shorter
Wide maximum Significantly wider aperture
Lowest price More expensive
Compare the SMC DA* 16-50mm f/2.8 ED SDM vs the 24-70mm f/2.8 EX DG Macro DF Pentax-k
Pentax SMC DA 17-70mm f/4 AL SDM

Pentax SMC DA 17-70mm f/4 AL SDM

Wide angle lens

$597
Focus motor Has a silent focus motor
Zoom range More zoom
Wide maximum Significantly wider aperture
Aperture Narrower aperture
Compare the SMC DA 17-70mm f/4 AL SDM vs the 24-70mm f/2.8 EX DG Macro DF Pentax-k
Sigma 35mm f/1.4 DG HSM A1 Pentax-k

Sigma 35mm f/1.4 DG HSM A1 Pentax-k

Low light lens

$899
Focus motor Has a silent focus motor
Prime lens Is a prime lens
Zoom range Less zoom
Max focal length Slightly worse telephoto
Compare the 35mm f/1.4 DG HSM A1 Pentax-k vs the 24-70mm f/2.8 EX DG Macro DF Pentax-k
Sony DT 18-250mm f/3.5-6.3

Sony DT 18-250mm f/3.5-6.3

Travel lens

$648
Zoom range Much more zoom
Max focal length Significantly better telephoto
Fixed aperture Has a variable aperture
Wide maximum Significantly wider aperture
Compare the DT 18-250mm f/3.5-6.3 vs the 24-70mm f/2.8 EX DG Macro DF Pentax-k
Olympus Zuiko 35-100mm f/2 ED

Olympus Zuiko 35-100mm f/2 ED

Sports lens

$2,499
Aperture Wider aperture
Max focal length Slightly better telephoto
Wide maximum Significantly wider aperture
Length Longer
Compare the Zuiko 35-100mm f/2 ED vs the 24-70mm f/2.8 EX DG Macro DF Pentax-k

Sigma 18-250mm f/3.5-6.3 DC OS HSM Pentax-k Competitors

Advantages

Disadvantages
Sigma 28-300mm f/3.5-6.3 DG Macro Pentax-k

Sigma 28-300mm f/3.5-6.3 DG Macro Pentax-k

Wildlife lens

$279
Max focal length Better telephoto
Magnification Slightly more magnification
Focus motor Doesn't have a silent focus motor
Image stabilization No image stabilization
Compare the 28-300mm f/3.5-6.3 DG Macro Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Tamron 18-270mm f/3.5-6.3 Di II VC PZD Nikon-f

Tamron 18-270mm f/3.5-6.3 Di II VC PZD Nikon-f

Travel lens

$649
Zoom range More zoom
Weight Slightly lighter
Magnification Slightly less magnification
Compare the 18-270mm f/3.5-6.3 Di II VC PZD Nikon-f vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Tamron 18-250mm f/3.5-6.3 Di-II LD IF Macro Nikon-f

Tamron 18-250mm f/3.5-6.3 Di-II LD IF Macro Nikon-f

Travel lens

$279
Weight Slightly lighter
Focus motor Doesn't have a silent focus motor
Image stabilization No image stabilization
Compare the 18-250mm f/3.5-6.3 Di-II LD IF Macro Nikon-f vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k

Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k

Macro lens

$165
Magnification More magnification
Max focal length Better telephoto
Zoom range Much less zoom
Focus motor Doesn't have a silent focus motor
Compare the 70-300mm f/4-5.6 Di LD Macro Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Tamron 18-200mm f/3.5-6.3 XR Di-II Macro Pentax-k

Tamron 18-200mm f/3.5-6.3 XR Di-II Macro Pentax-k

Travel lens

$290
Weight Slightly lighter
Focus motor Doesn't have a silent focus motor
Image stabilization No image stabilization
Compare the 18-200mm f/3.5-6.3 XR Di-II Macro Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k

discussion Which do you think is better?

Speech is free, but discussion at LensHero is moderated! Please discuss your opinion of these lenses here, and discuss feedback for LensHero at our support community.

Showing 0 comments
“LensHero will help you cut through the sheer number of lenses out there to find the few you want to read more about”
- LifeHacker
“Finding the right lens on Lenshero is incredibly easy!”
- Revell Photography
“I am in love with LensHero.”
- Shoot from the Belly
“Kind of a little bit in love with LensHero”
- @alicetragedy
“No technical stuff whatsoever, just plain and simple questions complete with examples so that any user can understand”
- Karel Donk, Photographer
“I love that I can pull up different lenses in my price range that will fit my DSLR.”
- Jennifer Sutton
feedback and support | about | blog | privacy and legal
Copyright © 2013 by LensHero, Inc. All Rights Reserved.
Rebellion Media Technology